A man accused of making a homemade bomb in Johnson City earlier this month was appointed a public defender this morning in a court appearance.

David Collins, 49, 310 Hamilton St., was booked into the Washington County Detention Center about 4:30 p.m. Tuesday after a warrant was issued Monday charging him with attempt to manufacture an explosive devise and felony reckless endangerment.

He was arraigned this morning in Washington County Sessions Court and ordered held on $25,000 bond. A preliminary hearing was set for July 3.

Court documents indicate Collins called 911 the night of June 14 telling dispatchers he had a homemade bomb and that he wanted to kill his ex-wife's boyfriend.

Collins used ammonium nitrate fertilizer mixed with lamp oil and placed it in a plastic bottle with nails and screws, but the device lacked a fuse, police said in the court record.

The backpack was found on the sidewalk in front of 420 Lamont Street, and the bomb squad used a device called a disrupter to determine the contents of the backpack, JCPD Capt. Brian Rice said after the incident. Items in the backpack suggested that Collins was attempting to make a complete bomb, Rice said.

The road was blocked off to traffic during the investigation Friday as part of the bomb squad’s protocol. Police notified residents around the sidewalk where the bomb was found.